path for addon domains

Just noticed, that cpanel 11 let now enter path for addon domain when you add it. Fine idea, but.. today on this server failed apache, checked and found that one very clever user put there something like C:/Document and Settings/.. so it was in httpd.conf like:

DocumentRoot /home/sidear/D:\Documents and Settings\Path\To\Something

Consider to add strict check here otherwise we can face permanent problems like this one